Is It Safe to Unmount Disk 1 Debian Linux From Disk 0 Windows 7

Background:

• I have an Asus P67 Sabertooth motherboard. The motherboard supports 6GB SATA.


• I have two 1TB Western Digital Caviar Black 64MB Cache SATA Drives.


• I have a Plextor PX-880SA CD/DVD Optical SATA.

Both hard drives are on the 6GB Channels.

I DO NOT dual boot ... I simply use the uEFI BIOS quick key to access drive selection on POST to determine which drive ~ OS I want to use. In Linux, I have disabled OS prober in Grub ... so if I run update-grub it won't try to wipe out my Windows MBR on disk 0.

Disk 0 is Windows 7.
Disk 1 is my Debian 6.

==================================================================================

1. Disk 0: Online

   
   
   

   
   
   

   Vol C = Sys Reserved for W7 = 100MB NTFS
   Vol C = W7 (C:) = 244GB NTFS
   Vol D = Data (D:) = 342 GB NTFS
   346GB = Unallocated

   
   




2. Disk 1: Online

   
   
   

   
   

   (/boot / /etc /home) = 500GB
   346GB = Unallocated

   
   




3. CD-ROM 0 :

   
   
   

   
   
   

   DVD (E:)

   
   

==================================================================================

When I start Windows 7 I can see Disk 1 as 'Active' which ... concerns me ... I don't want Windows to have any access to this disk. I want to Disk 0 and Disk 1 completely separate.

Is it safe to unmount my Linux drive from Windows 7 using diskpart? Is this even necessary to achieve my goal?